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Recognised as Colour

#401C51

  • #401C51
  • Violet
  • Dark
  • Nearest: Dark slateblue

#401C51 is a violet with RGB values 64, 28, 81 and HSL 281°, 49%, 21%. It is a dark colour, so white text on it reaches 14:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#401C51#401C51
HEX#401C51
RGBrgb(64, 28, 81)
RGB (0–1)0.251, 0.1098, 0.3176
RGB percentages25.1%, 11%, 31.8%
HSLhsl(280.8, 48.6%, 21.4%)
HSV / HSBhsv(280.8, 65.4%, 31.8%)
CMYK21%, 65.4%, 0%, 68.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,201,553
CSS custom property--colour: #401C51;

Brightness & contrast

Relative luminance0.02515WCAG 2.x, 0 is black and 1 is white
Perceived brightness49.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.97:1
Contrast with white13.97:1WCAG normal text: AAA
Contrast with black1.5:1WCAG normal text: Fail
Greyscale equivalent#272727
Inverted#BFE3AE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0A2A53no red cones; affects about 1% of men; ΔE 22 from the original
Deuteranopia#1A2D50no green cones; the most common form, about 1% of men; ΔE 22.6 from the original
Tritanopia#3E2533no blue cones; rare, and affects men and women equally; ΔE 25 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.97:1WCAG large text: AAA
Contrast with black, large text1.5:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 21.1Midnight blue · ΔE 24.6Rebecca purple · ΔE 30.5Purple · ΔE 35.2Indigo · ΔE 36.9Dark magenta · ΔE 40.1
Nearest named CSS colourDark slateblue (#483D8B)ΔE 21.14, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#2D511C
Analogous#261C51, #511C47
Triadic#51401C, #1C5140
Split complementary#48511C, #1C5125
Tetradic#51251C, #2D511C, #1C4751

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#AE6DCC
Lighter +30%#9947BF
Lighter +20%#7C369D
Lighter +10%#5E2977
Darker −10%#220F2B
Darker −20%#040205
Darker −30%#000000
Darker −40%#000000
More saturated +25%#450E5F
Less saturated −25%#3B2A43

Channel breakdown

R64
G28
B81
Red64 (25.1%)
Green28 (11%)
Blue81 (31.8%)
Hue280.75°
Saturation (HSL)48.62%
Lightness21.37%
Dominant channelBlue
Hex per channelR 40 · G 1C · B 51

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Every value on this page was computed from “401c51” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.